"The April rain, the April rain,
Comes slanting down in fitful showers,
Then from the furrow shoots the grain,
And banks are fledged with nestling flowers;
And in grey shawl and woodland bowers
The cuckoo through the April rain
Calls once again."
Mathilde Blind, April Rain
The modal verbs are a tricky thing for most people.
I know I should and I would if I could, but I can't
Practise what you've learnt here.